STUDY OF DYNAMIC SPACE-CHARGE IN SRS-CE THIN-FILM ELECTROLUMINESCENT DEVICES BY TUNABLE LASER EXCITATION

Authors
PETER M KASHIO Y NISHIMURA S OHMI K TANAKA S KOBAYASHI H
Citation
M. Peter et al., STUDY OF DYNAMIC SPACE-CHARGE IN SRS-CE THIN-FILM ELECTROLUMINESCENT DEVICES BY TUNABLE LASER EXCITATION, Applied physics letters, 71(13), 1997, pp. 1819-1821
Citations number
11
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
71
Issue
13
Year of publication
1997
Pages
1819 - 1821
Database
ISI
SICI code
0003-6951(1997)71:13<1819:SODSIS>2.0.ZU;2-6
Abstract
The origin of the dynamic space charge in SrS:Ce ac-driven thin-him el ectroluminescent devices is studied using photoinduced current measure ments. Field assisted photoionization of Ce3+ centers and of intrinsic electron traps is observed. The results show that about 50% of the dy namic space charge in SrS:Ce originates from cerium ionization. The re maining 50% results from the ionization of crystal imperfections. (C) 1997 American Institute of Physics.